body {
  margin: 0;
  font-family: 'Arial', sans-serif;
  background: linear-gradient(-45deg, #6a11cb, #2575fc, #ff6f61, #2af598);
  background-size: 400% 400%;
  animation: gradientAnimation 10s ease infinite;
  color: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}


@keyframes gradientAnimation {
  0% {
      background-position: 0% 50%;
  }
  50% {
      background-position: 100% 50%;
  }
  100% {
      background-position: 0% 50%;
  }
}


#square {
  background: rgba(255, 255, 255, 0.1);
  padding: 20px;
  border-radius: 15px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  text-align: center;
  width: 90%;
  max-width: 400px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(10px);
}


h1 {
  font-size: 2.2rem;
  margin-bottom: 20px;
  color: #fff;
  text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.5);
}


#display {
  margin-bottom: 20px;
}

#inputnum {
  width: 100%;
  padding: 10px;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2);
  outline: none;
}


#buttoncontainer {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 20px;
}

.btn {
  background: rgba(255, 255, 255, 0.2);
  border: none;
  border-radius: 8px;
  color: white;
  padding: 10px 15px;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.btn:hover {
  background: #fff;
  color: #6a11cb;
  transform: scale(1.05);
}


#reset {
  background: #ff5e57;
  color: white;
  border: none;
  border-radius: 8px;
  padding: 10px 15px;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

#reset:hover {
  background: #ff8982;
  transform: scale(1.05);
}


#result {
  margin-top: 20px;
  font-size: 1.5rem;
  font-weight: bold;
  text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.5);
}